fix(textarea): set value correctly

[ryan-nauman-cs]

Fixes #527. This is the same fix as CrowdStrike/ember-toucan-core#447. I've added a test to verify its now working properly.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 86a8d76

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[ryan-nauman-cs]

@simonihmig i was unable to get changeset to play nicely.

$ pnpm changeset
🦋  Which packages would you like to include? · ember-headless-form
🦋  Which packages should have a major bump? · No items were selected
🦋  Which packages should have a minor bump? · No items were selected
🦋  The following packages will be patch bumped:
🦋  ember-headless-form@1.1.1
🦋  Please enter a summary for this change (this will be in the changelogs).
🦋    (submit empty line to open external editor)
🦋  Summary · Fix textarea value tracking 
🦋  
🦋  === Summary of changesets ===
🦋  patch:  ember-headless-form
🦋  
🦋  Note: All dependents of these packages that will be incompatible with the new version will be patch bumped when this changeset is applied.
🦋  
🦋  Is this your desired changeset? (Y/n) · true
🦋  error Error [ERR_REQUIRE_ESM]: require() of ES Module ember-headless-form/node_modules/.pnpm/prettier-plugin-ember-template-tag@2.0.5_prettier@2.8.8/node_modules/prettier-plugin-ember-template-tag/dist/prettier-plugin-ember-template-tag.js from ember-headless-form/node_modules/.pnpm/prettier@2.8.8/node_modules/prettier/index.js not supported.
🦋  error Instead change the require of prettier-plugin-ember-template-tag.js in ember-headless-form/node_modules/.pnpm/prettier@2.8.8/node_modules/prettier/index.js to a dynamic import() which is available in all CommonJS modules.
🦋  error     at ember-headless-form/node_modules/.pnpm/prettier@2.8.8/node_modules/prettier/index.js:38143:10
🦋  error     at Array.map (<anonymous>)
🦋  error     at Object.load (ember-headless-form/node_modules/.pnpm/prettier@2.8.8/node_modules/prettier/index.js:38141:128)
🦋  error     at Object.load [as loadPlugins] (ember-headless-form/node_modules/.pnpm/prettier@2.8.8/node_modules/prettier/index.js:16147:23)
🦋  error     at ember-headless-form/node_modules/.pnpm/prettier@2.8.8/node_modules/prettier/index.js:38181:24 {
🦋  error   code: 'ERR_REQUIRE_ESM'
🦋  error }

[simonihmig]

LGTM! But the repo is not in a good shape, the failure is not related to your PR. I wanted to look at this, but haven't yet found the time given other priorities... 😩